PHEROMA is is a science-based pet odour remover which can successfully be used on unpleasant smells such as cat urine, anal gland smells, cat litter, vomit, faeces – and even sour milk. Most other products simply mask the unpleasant smell with a strong perfume, leaving the underlying malodour to return when the perfume evaporates. But pleasant-smelling PHEROMA actually removes unpleasant odours permanently. Use the Powder form for litter trays or bedding (for cats, hamsters, etc) or use the Spray for carpets and furniture. PHEROMA products are non-toxic and non-irritant.